2019 MERCEDES-BENZ C-CLASS CABRIOLET Owner's Manual

If
th eve hicle isno topened within appr oximat ely
40 seco ndsafte runloc king,itloc ksagain. Anti-
th eftpr otect ion isarmed again.
Do notke ep theSmar tKey toge ther wit helec‐
tr onic devices orme talobje cts. This canaffect
th eSmar tKey 's functionality .
0009 Ifbatt erych ecklam p2 does notlight up
af te rpr essing the0036 or0037 button,the
batt eryis disc harged.
Re place theSmar tKey batt ery(0013 page64 ). Ac
tiv atin g/deac tivatin gthe acoustic lock ing
ve rificat ion signa l Mult
imed iasystem:
0018 Vehicle 0019
î Vehicle Setting s
0019 Aco ustic Lock 0007
Activate0073 ordeacti vate 0053 thefunc tion. Ac
tiv atin g/deac tivatin gthe pani calar m Re
quirement s:
R The ignit ionisswitc hedoff 0009
The panic alarmfunc tion isonl yav ailable in
cer tain coun tries. 0007
Toactiv ate: press butt on1 forapp rox‐
ima tely one second.
A visual andaudibl ealar mistrigg ered. 0007
Todeac tivate: briefly pr ess button1 again.
or 0007
Press thest ar t/ stop butt ononthecoc kpit
(t he Smar tKey isinsid eth eve hicle). Changing
theunloc kingsettings Po
ssible unlockingfunctions oftheSmar tKey :
R Cen tralunlo cking R
Unloc kin gth edr iver's door andfuel filler flap 0007
Toswitc hbe tw een settings: press the
0036 and0037 buttonssimul taneousl yfo r
appr oximat elysix seco ndsuntilth ebatt ery
ch ecklam pflashes twice.
If th eunloc kingfunction forth edr iver's door
and fuel filler flap has been selected:
R Pressing the0036 buttonasecon dtime cen‐
tra lly unloc kstheve hicle
R Vehicl eswith KEYLESS-GO :If yo uto uc h
th einner surface ofthedoor handle onthe
dr iver's door ,onl yth edr iver's door andfuel
fi ller flap areunlo cked. Deactiv
atingtheSm artK ey functio ns If
yo udo notuse theve hicle oraSmar tKey for
an extende dpe riod oftime, youcan reduce the
ener gycon sum ption ofthere spectiv eSmar t‐
Ke y.To do so, deactiv ateth eSmar tKey func‐
tions. Openi
ngand closi ng 63

0007
Todeac tivate: press the0037 buttononthe
Smar tKey twi ce inqu ick succ ession .
The batterych ecklam pof theSmar tKey
fl ashes twicebr ief lyand light sup once. 0007
Toactiv ate: press anybutt onontheSmar t‐
Ke y.
0009 When theve hicle isstar tedwit hth eSmar t‐
Ke yin thestow agecom partment ofthecen‐
te rconsole, theSmar tKey functions are
au tomatical lyact ivat ed (0013 page12 9). Re
mo ving /ins ertin gthe eme rgency key 0007
Toremo ve:pr ess release button1.
Em erge ncy key2 ispush edout slightly. 0007
Pull outemer gency key2 untilit en gage sin
th eint ermediat eposition .
0009 Youcan usetheint ermediat eposition of
emer gency key2 toatt achth eSmar tKey to
a ke yring. 0007
Press release button1 again and fully
re mo veemer gency key2. 0007
Toinser t:press release button1. 0007
Insertemer gency key2 totheint ermediat e
position orfull yuntil iteng ages. Re
plac ingthe Smar tKey batt ery 000A
DANG ER Serious damag eto healt h
caused byswallo wing batteries
Batt eries cont aintoxic and corrosiv esub‐
st anc es.Swallo wing batteries ma ycause
ser ious damag eto healt h.
Ther eis arisk offata linj ury. 0007
Keep batt eries out ofthere ac hof chil‐
dr en. 0007
Ifbatt eries aresw allo wed,seek medical
att ent ion immediat ely. 000F
ENVIR
ONMEN TALNO TEEnvironme ntal
da ma gecau sed byimproper disposal of
batt eries Bat
teries con tain polluta nts. Itis
illeg alto dispose ofthem withth ehousehold
ru bbish. 0007
Dispose
ofbatt eries inan
en vironmen tally re sponsible manner.
Ta ke disc hargedbatt eries toaqu alif ied
spec ialistwo rkshop ortoacol lection
poin tfo rused batteries. 64
Opening andclosing

Re
quirement s:
R Youre qu ire aCR 203 23V cell battery.
Mer cedes-Ben zre comme ndsthat youha ve the
batt eryre placed ataqu alif ied spec ialistwo rk‐
shop. 0007
Remo vetheemer gency key(0013 page64 ). 0007
Press release button2 down fullyand slide
co ver1 inthedir ect ion ofthear row . 0007
Foldout cover1 inthedir ect ion ofthe
ar row and remo ve. 0007
Remo vebatt erycom partmen t3 and take
out thedisc hargedbatt ery. 0007
Inser tth ene wbatt eryint obatt erycom part‐
ment 3.Obser vethepositiv epole marking
in thebatt erycom partmen tand onthebat‐
te ry when doingth is. 0007
Push inbatt erycom partment 3. 0007
Re-att achco ver1 and push ituntil it
eng ages. Pr
obl ems with theSm artK ey Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
Yo ucan nolongerloc kor unloc kth e
ve hicle. Po
ssible causes are:
R The Smar tKey batt eryis disc hargedor near lydisc harged.
R Ther eis int erfere nce from apo we rful radio signal source. Openin
gand closin g65

Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
R The Smar tKey isdef ective. 0007
Chec kth ebatt eryusing thebatt erych ecklam pand replace ifnec essar y(0013 page64 ). 0007
Use theemer gency keyto loc kor unloc k(0013 page64 ). 0007
Have theSmar tKey checkedat aqu alif ied spec ialistwo rkshop.
Yo uha ve los ta Smar tKey . 0007
Have theSmar tKey deactiv ated ataqu alif ied spec ialistwo rkshop. 0007
Ifnecessar y,ha ve themec hanical lockch ang edaswell. 66
Openingand closing

Door
s Un
loc king andopening doorsfrom theinsid e 0007
Pull door handle2.
Loc kingpin 1pops upwhen thedoor is
unloc ked. Centr
allyloc king andunloc kingtheve hicl e
fr om theinsid e 0007
Tounlo ck:pr ess button 1. 0007
Toloc k:press butt on2.
This does notloc kor unloc kth efuel filler flap. The
vehicle isno tunloc ked:
R Ifyo uha ve loc kedth eve hicle using the
Smar tKey .
R Ifyo uha ve loc kedth eve hicle using KEY‐
LESS -GO. Loc
king/unloc kingtheve hicl ewith KEY‐
LES S-GO Re
quirement s
R The Smar tKey isouts idetheve hicle.
R The distance betwee nth eSmar tKey and the
ve hicle does notex ceed 3ft (1 m).
R The driver's door andthedoor atwhic hth e
door handle isused areclosed. Openin
gand closin g67

0007
Tounlo cktheve hicl e:touc hth einner sur‐
fa ce ofthedoor handle. 0007
Toloc kth eve hicl e:touc hsen sor surface
1 or2. 0007
Convenience closing:touc hre cess edsen‐
sor surface 2untilth eclosing procedur eis
com plete.
0009 Further information oncon venie nce closing
(0013 page 76).
If yo uopen thetrunk lidfrom outside itis aut o‐
maticall yunloc ked. Pr
oblems withKEYLE SS-GO Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
Yo ucan nolongerloc kor unloc kth e
ve hicle using KEYLES S-GO. Po
ssible causes are:
R The Smar tKey functions have been deactiv ated (0013 page63).
R The Smar tKey batt eryis disc hargedor near lydisc harged.
R Ther eis int erfere nce from apo we rful radio signal source. 68
Openin gand closin g

Pr
oblem
Possible causes/conseq uencesand0050 0050
Solutions
R The Smar tKey isfaulty . 0007
Activateth eSmar tKey functions (0013page63). 0007
Che ckthebatt eryusing thebatt erych ecklam pand replace ifnec essar y(0013 page64 ). 0007
Use theemer gency keyto unlo ckorloc kth eve hicle (0013 page64 ). 0007
Have theve hicle andSmar tKey checkedat aqu alif ied spec ialistwo rkshop. Ac
tiv atin g/deac tivatin gthe automati clo ck ‐
ing featur e The
vehicle isloc kedaut omatic allywhen the
ignit ionisswitc hedonand thewheels aretur n‐
ing faster than walkin gpace. 0007
Toactiv ate: press and hold button2 for
appr oximat elyfive seconds untilanacous tic
signal sounds. 0007
Todeac tivate: press and holdbu tton 1 for
appr oximat elyfive seconds untilanacous tic
signal sounds.
In thefo llo wing situat ions,th er eis adang erof
being lockedout when thefunc tion isactiv ated:
R While theve hicle isbeing tow star ted/
pushed.
R The vehicle isbeing tested on thedynamom‐
et er. Openin
gand closing 69

Loc
king/u nlocking thedr iver' sdoor withth e
emer gency key 0009
Ifyo uwish toloc kth eve hicle entirelyusing
th eemer gency key,firs tpr es sth ebutt onfor
loc kin gfrom theinside whilethedr iver's
door isopen. Thenproceed toloc kth edr iv‐
er's door using theemer gency key. 0007
Inser tth eemer gency keyas faras itwil lgo
int oopening 1intheco ver. 0007
Pull and hold thedoor handle. 0007
Pull theco veron theemer gency keyas
st ra ight aspossible away from theve hicle
until itre leases. 0007
Release thedoor handle. 0007
Tounlo ck:tur nth eemer gency keyco unt er-
clo ckwise toposition 0047. 0007
Toloc k:tur nth eemer gency keyclo ckwise to
position 0047. 0007
Carefully press theco veront oth eloc kcyli n‐
der until iteng ages and isseat edfirm ly. Tr
unk Openi
ngthetrunk lid 000A
DANG ER Risk ofexhaus tga spoisoning
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Exhaus t
ga ses can entertheve hicle interior ifth e
tr unk lid is op en when theengine isrunning ,
esp ecially ifth eve hicle isin mo tion. 0007
Alw aysswitc hof fth eengine before
opening thetrunk lid. 0007
Neverdr ive wit hth etrunk lidopen. 70
Openin gand closing